Uranium-232 has a half-life of 68.9 years. A sample from 206.7 years ago contains 1.40 g of uranium-232. How much uranium was originally present?

Find the rms speed of the molecules of a sample of n2 (diatomic nitrogen) gas at a temperature of 34.3°c.

A solution of 1.00 M NaCl is available. How many milliliter are needed to make 100.0 mL of 0.750 M

In 2009, based on concepts similar to those used to estimate U. S. employment figures, the Swedish adult non-institutionalized population was 7.568 million, the labor force was 4.888 million, and the number of people employed was 4.486 million.

Magnesium Oxide decomposes to produce 3.54 grams of oxygen gas. How many grams of magnesium oxide decomposed?

Write a balanced equation for the formation of one mole of nacl (aq) from its elements

What would a 1:1 liquid binary mixture of Cyclohexane and Toluene look like? How would the molecules associate with one another?

A sample of argon gas is at a pressure of 1.725x10^4 kPa and a temperature of 24°C in a rigid 20 L tank. How many moles of argon does this tank contain? (show your work)

summarize what you read on the two articles by identifying the advantages and disadvantages of using plastics

What happens chemically when quick lime is added to water?

What was the crop that led to the success of Jamestown? A) cotton B) sugar cane C) tobacco D) indigo